If you have an online store, then in your Instagram profile you will probably periodically publish products. How to make a menu for all products in order to sort them by type or purpose. The algorithm of actions is not complicated
How does an online store maintain a profile on Instagram? Catch a checklist for filling out and maintaining a business account
How to promote your VK group - effective tools for promotion
What to post in the Instagram: motivating and inspiring ideas for visual content.